Java

Dropbox: Access Your Own Account

See more Dropbox Examples

To programmatically interact with your own Dropbox account, such as for uploading, downloading, listing files, etc., go to the Dropbox app console and create an application. Then generate an access token in the online app console as shown in the screenshot below. The access token does not expire, and can be used to access your own account from your own non-web application.

The example code, located below the screenshot, shows how to list the files in the root folder.

Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.DateTime;
import com.chilkatsoft.chilkat2.DtObj;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.Rest;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        Rest rest = new Rest();

        // Connect to the www.dropbox.com endpoint.
        boolean bTls = true;
        int port = 443;
        boolean bAutoReconnect = true;
        try {
            rest.connect("api.dropboxapi.com", port, bTls, bAutoReconnect);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        rest.addHeader("Content-Type", "application/json");
        rest.addHeader("Authorization", "Bearer DROPBOX-ACCESS-TOKEN");

        JsonObject json = new JsonObject();
        // The root folder should be an empty string, not "/"
        json.appendString("path", "");
        json.appendBool("recursive", false);
        json.appendBool("include_media_info", false);
        json.appendBool("include_deleted", false);
        json.appendBool("include_has_explicit_shared_members", false);

        String responseStr;
        try {
            responseStr = rest.fullRequestString("POST", "/2/files/list_folder", json.emit());
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Success is indicated by a 200 response status code.
        if (rest.getResponseStatusCode() != 200) {
            // Examine the request/response to see what happened.
            System.out.println("response status code = " + rest.getResponseStatusCode());
            System.out.println("response status text = " + rest.getResponseStatusText());
            System.out.println("response header: " + rest.getResponseHeader());
            System.out.println("response body (if any): " + responseStr);
            System.out.println("---");
            System.out.println("LastRequestStartLine: " + rest.getLastRequestStartLine());
            System.out.println("LastRequestHeader: " + rest.getLastRequestHeader());
            return;
        }

        JsonObject jsonResponse = new JsonObject();
        jsonResponse.load(responseStr);

        jsonResponse.setEmitCompact(false);
        System.out.println(jsonResponse.emit());

        // A sample JSON response is shown at the end of this example.
        // The following code iterates over the entries.
        DtObj dt = new DtObj();
        int numEntries = jsonResponse.sizeOfArray("entries");
        int i = 0;
        while (i < numEntries) {
            jsonResponse.setI(i);
            System.out.println("----");
            System.out.println("name: " + jsonResponse.stringOf("entries[i].name"));
            System.out.println("path_lower: " + jsonResponse.stringOf("entries[i].path_lower"));
            System.out.println("path_display: " + jsonResponse.stringOf("entries[i].path_display"));
            if (jsonResponse.hasMember("entries[i].sharing_info")) {
                System.out.println("has sharing_info...");
                System.out.println("read_only: " + jsonResponse.stringOf("entries[i].sharing_info.read_only"));
                System.out.println("shared_folder_id: " + jsonResponse.stringOf("entries[i].sharing_info.shared_folder_id"));
            }

            if (jsonResponse.hasMember("entries[i].client_modified")) {
                // Demonstrate how to parse a date/time:
                DateTime ckdt = new DateTime();
                ckdt.setFromTimestamp(jsonResponse.stringOf("entries[i].client_modified"));
                // The date/time can now be converted to many other formats, or the individual parts
                // can be accessed.
                boolean bLocalDateTime = true;
                ckdt.toDtObj(bLocalDateTime, dt);

                System.out.println(dt.getYear() + "-" + dt.getMonth() + "-" + dt.getDay());
            }

            i = i + 1;
        }

        System.out.println("Success.");

        // {
        //   "entries": [
        //     {
        //       ".tag": "folder",
        //       "name": "chilkat Team Folder",
        //       "path_lower": "/chilkat team folder",
        //       "path_display": "/chilkat Team Folder",
        //       "id": "id:2VqX9RLr-JAAAAAAAAAAAQ",
        //       "shared_folder_id": "1210954290",
        //       "sharing_info": {
        //         "read_only": false,
        //         "shared_folder_id": "1210954290"
        //       }
        //     },
        //     {
        //       ".tag": "file",
        //       "name": "Get Started with Dropbox.pdf",
        //       "path_lower": "/get started with dropbox.pdf",
        //       "path_display": "/Get Started with Dropbox.pdf",
        //       "id": "id:oxE2oMDqH4AAAAAAAAAAAQ",
        //       "client_modified": "2016-05-07T11:47:47Z",
        //       "server_modified": "2016-05-07T11:47:47Z",
        //       "rev": "1483db13f",
        //       "size": 692088
        //     }
        //   ],
        //   "cursor": "AAEnZXciJyS4gzC_tlX6K2na4c8o7_09-dxmXKHpkPPyf3Kl0H4N-VYnz424nCrFOJuhMiM5_RgNAersumx9qe7NgCSdlppr80iFk0gf6vPlecM6SBtLcs6OYXL8ILWiZ62pfnOvgC3WKGlG6dqZ-VXH",
        //   "has_more": false
        // }
        //
    }
}